2748155640665 has 16 divisors (see below), whose sum is σ = 3441821175936. Its totient is φ = 2102537817600.

The previous prime is 2748155640649. The next prime is 2748155640677. The reversal of 2748155640665 is 5660465518472.

It is not a de Polignac number, because 2748155640665 - 2⁴ = 2748155640649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1655231 + ... + 2869860.

It is an arithmetic number, because the mean of its divisors is an integer number (215113823496).

Almost surely, 2^{2748155640665} is an apocalyptic number.

It is an amenable number.

2748155640665 is a deficient number, since it is larger than the sum of its proper divisors (693665535271).

2748155640665 is a wasteful number, since it uses less digits than its factorization.

2748155640665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530400.

The product of its (nonzero) digits is 48384000, while the sum is 59.

The spelling of 2748155640665 in words is "two trillion, seven hundred forty-eight billion, one hundred fifty-five million, six hundred forty thousand, six hundred sixty-five".